Home ProductsHigh Performance Butterfly Valves

Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

Certification
Good quality API609 Butterfly Valve for sales
Good quality API609 Butterfly Valve for sales
Dear Peter, Highly appreciate your sound service. The valves have well arrived and looks every well. Regards, Andrea

—— Mr. Andrea Arredondo

Hi, my friend. Finally we got the bidder and nice to cooperate with you.You prefession and quick reaction was the firm support for the business.

—— Mr.Hiep Le Hao

GOOD DAY, MY FRIEND. WELL RECEIVED YOUR VLAVES, GOOD QUALITY AND NICE PAITING. THANK YOU!

—— Mr. MARCELO ZANON

Good da, we just got the appoval from our customer. Your experiences helped a lot in the project. The final drawing is also very professional. Cheers!

—— Mr. Scott Hornick

compramos de TEKO desde 2011, continuaremos la cooperación. La calidad es buena y el precio es bueno.

—— Ing. Hugo Diaz

I'm Online Chat Now

Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

China Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life supplier
Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life supplier Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life supplier

Large Image :  Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

Product Details:

Place of Origin: Made in China
Brand Name: TEKO
Certification: CE, API
Model Number: D72H

Payment & Shipping Terms:

Minimum Order Quantity: 1 pieces
Price: By negotiation
Packaging Details: Pollywooden cases
Delivery Time: 40 days after deposit
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 500 tons per year
Contact Now
Detailed Product Description
Body Material: WCB, CF8, CF8M Installation: Any Direction
Design: API 609 Size Rating: 2" To 60"
Pressure: Class 150~600Lb Temperature: High Temperature Service

Metal seated Zero Leakage High Temperature High Performance Butterfly Valves

 

 

Metal Seated High Performance Butterfly Valve

 

Through years of development, we develop the metal seated high performance butterfly valve with high temperature working range up to 858 ℃. The end connection is available for wafer, full lug, and double flanges type. With advanced technology, the life time more than 100,000 times cycles.

 

 

Quick Info:

 

Size Range: DN50 - DN1500 (2" - 60")
Pressure Rating: PN16,PN25,PN40
Body Patterns: Wafer, Lugged
Body Seat: 316
Body Materials: WCB, CF8, CF8M
Disc Materials: CF8/CF8M
Temperature Rating: -39°C to +858°C
Flange Standards: ANSI150, PN6/10/16, JIS 5K/10K/16K/20K
Operation: Manual, Electric, Pneumatic

 

 

Working principle of metal seat

 

Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

 

 

 

Figure 1 PRINCIPLE OF METAL SEATING

Metal-to-metal sealing is accomplished by the “line contact” between a spherical surface and conical surface. Figure 1 illustrates a typical globe control valve seat and plug. The plug seating surface is the segment of a sphere; when engaged against the seat ring, a line contact seal is achieved.

In a metal seat design, it is necessary to apply enough force per linear inch to maintain a tight metal-to-metal contact between the sealing members; however, high linear thrust can cause a collapse of the seating members (“bearing failure”).

 

Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

 

 

Figure 2 DISC CLOSED, Self-energized Seal

In figure 2, the disc and seat are engaged, and the process fluid is under low pressure. The spherical edge of the disc, with a larger diameter than the conical seat tongue, imparts a thrust of approximately 600 pounds per linear inch against the seat. The mechanical properties and shape of the metal seat allow it to both flex and maintain a constant thrust against the disc.

This controlled loading prevents the occurrence of bearing failure and reduces the leakage and wear between the components.

 

Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

 

 

 

Figure 3 DISC CLOSED, Pressure-energized Seal (Seat Upstream)

As line pressure increased, the process fluid enters the sidewall area and applies a load against the parallel-spaced sidewall and convergent sidewall of the metal seat. The seat moves towards the downstream sidewall while being supported axially by the support ring, as shown in Figure 3. The cavity shape confines the seat movement and directs the movement radially inward towards the disc; the higher the line pressure, the tighter the line contact between the disc and seat. The metal seat, shaped by a special hydroforming process, is able to flex under these loads and return to its original shape after removal of the loads.

 

This dynamic seal, sealing equal to Flowseal, is totally unique among high performance butterfly valves.

 

 

Metal Seated High Temperature Butterfly Valve Anti - Leakage With Long Service Life

 

Figure 4 DISC CLOSED, Pressure-energized Seal (Seat Downstream)

The valve is bi-directional (in some instances, modifications may be required to operate his arrangement for dead end service). The cavity and seat sidewalls are symmetrically designed to permit, confine and direct movement of the seat to the disc to dynamically seal with line pressure in the seat downstream direction, as in Figure4. Recommended installation direction is “SUS”(seat upstream), as figure 3.

The stainless steel back-up ring interacts dynamically with the metal seat for axial support in seat sealing. Additionally, this ring effectively restricts corrosion ad particulate build-up in the cavity.

 

 

Contact Details
TEKO Industry Co., Limited

Contact Person: sales

Send your inquiry directly to us (0 / 3000)